英文论文
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文献类型
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Journal article (JA)
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题名
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A deep red-light-emitting phosphor Mn4+:CaAl4O7for warm white LEDs
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作者
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Liu, S.X. (1); Xiong, F.B. (1, 2); Lin, H.F. (1); Meng, X.G. (1, 2); Lian, S.Y. (3); Zhu, W.Z. (1, 2)
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作者单位
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(1) Department of Optoelectronics, Xiamen University of Technology, Xiamen; 361024, China (2) Fujian Provincial Key Laboratory of Optoelectronic technologies and Devices, Xiamen University of Technology, Xiamen; 361024, China (3) Department of Materials Science and Engineering, Dayue University, Taiwan, China
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通讯作者地址
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Email
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ResearchID
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ORCID
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期刊名称
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Optik
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出版社
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Elsevier GmbH
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ISSN
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0030-4026
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出版信息
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2018-10, 170 ():178-184.
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JCR
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4
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影响因子
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1.914
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ISBN
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基金
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会议名称
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会议地点
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会议开始日期
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会议结束日期
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关键词
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Aluminum compounds; Calcium compounds; Energy transfer; High temperature applications; Light emitting diodes; Phosphors; Solid state reactions
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摘要
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Red-light-emitting phosphors Mn4+-doped CaAl4O7were synthesized by high temperature solid-state reaction, and we investigated their photoluminescence properties for their applications in white-light-diodes (W-LEDs). Mn4+-doped CaAl4O7exhibited deep red emission band peaking at 635, 641 and 655 nm arising from the spin-forbidden2E→4A2transition of Mn4+under near ultraviolet (UV) or blue light excitation. The Commission International de L'Eclairage (CIE) chromaticity coordinates of 0.6at.% Mn4+-doped CaAl4O7are (0.714, 0.285) under 470 nm excitation. The electric quadrupole-quadrupole interaction was the energy transfer mechanism in Mn4+-doped CaAl4O7phosphor, and the critical distance of energy transfer between the Mn4+ions was estimated to be about 1.533 nm. Mn4+-doped CaAl4O7show poor thermal quenching properties based on the temperature-dependent fluorescent spectra. Further work to improve thermal stability need be carried out for Mn4+-doped CaAl4O7as a promising red-light-emitting phosphor. ? 2018 Elsevier GmbH
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一级学科
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WOS入藏号
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EI收录号
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20182205264820
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DOI
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10.1016/j.ijleo.2018.05.127
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ESI
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PHYSICS
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收录于
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EI
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